Headphones



FIG. 1 is a perspective view of headphones showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a side elevational view of one side thereof;

FIG. 5 is a side elevational view of the opposite side thereof; and,

FIG. 6 is a top plan view thereof.

The broken line showing depicts environmental features, and forms no part of the claimed design. 

CLAIM The ornamental design for headphones, as shown and described. 